【摘要】 移动AdHoc网络是一种新型的无线移动网络 ,由于它具有开放媒质、动态拓扑、分布式合作及受限的网络能力等特点 ,所以特别容易受到攻击 .在Adhoc网络中 ,一个节点不仅是一个主机 ,而且是一个路由器 ,它可以在网络中寻找和保持到其他节点的路由 .如果路由被误导 ,整个网络可能陷于瘫痪 .所以 ,路由安全是整个Adhoc网络的安全中最重要的一环 .论述了Adhoc网络几种路由协议 ,并针对Adhoc网络中AODV协议的黑洞攻击 ,提出了一种增强性的安全解决方案 ,该方案能在一定程度上解决黑洞问题并可防止假冒攻击更多还原

【Abstract】 As a new kind of wireless mobile network, mobile Ad hoc network(MANET) is characterized by open medium, dynamic topology, distributed cooperation and constrained capability, hence Ad hoc network is particularly vulnerable. A node in Ad hoc networks is not only a host but also a router, which can discover and maintain the routing information. If routing is misdirected, the whole network would have been paralysed. As a result, routing security is the most important factor in security of whole Ad hoc networks. In this paper, a few routing protocols are introduced firstly, and then a method for security enhancement is proposed to meet the black hole attack in AODV protocol. This method, to some extents, can solve the black hole problem and protect the network from impersonation attack.更多还原